仓库源文，站点原文

title: Javascript综合应用小案例 categories:

• JavaScript
• 杂物间 tags:
• tech
• cnblogs warning: true date: 2013-05-04 02:38:00 fromUrl: http://www.cnblogs.com/hustskyking/archive/2013/05/04/getkeywords.html from: 博客园

getSelectionText: function(){
    if(window.getSelection) {
        return window.getSelection().toString();
    } else if(document.selection && document.selection.createRange) {
        return document.selection.createRange().text;
    }
    return '';
}

createBtn: function(evt){
    var button = document.createElement("div"),
        //...
        csses = {
            "height" : "30px",
            "line-height" : "30px",
            "position": "absolute",
            "top": y + 10 + "px",
            "left": x + 10 + "px",
            "cursor": "pointer",
            "border": "1px solid #000",
            "background": "#EEE",
            "padding": "2px 8px",
            "border-radius": "3px"
        };
    for(i in csses){
        if(csses.hasOwnProperty(i)){
            cssList += i + ":" + csses[i] + ";";
        }
    }
    button.style.cssText = cssList;
    button.innerHTML = "添加到关键词列表";
    button.setAttribute("id", "btn");
　　//...
}

obj.style[i] = csses[i];

//关键词标红
setRed: function(str){
    var content = this._("article"),
        temp = '(' + str + ')';
        reg = new RegExp(temp,'g');

    content.innerHTML = content.innerHTML.replace(reg, "<span>$1</span>");
}

//删除标红
rmRed: function(str){
    var content = this._("article"),
        temp = "(<span[^<]*" +="" str="" "<="" span="">)";
        reg = new RegExp(temp,'gi');

    content.innerHTML = content.innerHTML.replace(reg, str);
}

</span[^<]*">

//获取已经存在的关键词（也可以用来获取所有关键词）
getAllKeyWord: function (){
    //...
},

//删除关键词
rmkeyWord: function (obj){
    //...
    GetKeywords.rmRed(word);
    for(len = GetKeywords.keywords.length; i < len; i++){
        if(GetKeywords.keywords[i] == word){
            GetKeywords.keywords.splice(i,i);
        }
        continue;
    }
    //...
}

GetKeywords.init();